Posted by
Christine on
.
Moe earns 15% more than her husband Joe. Together they make 78000 per year. What is Joe’s annual salary?
Answer to two significant figures.
My answer was $31000, but the program doesn't seem to want to take it. Did I do something wrong?

Physics(class) /Math (problem) 
Steve,
if Joe makes J dollars, then Moe earns 1.15J
J + 1.15J = 78000
J = 36279
So, Joe makes $36279
Moe makes $41721
add 'em up to get 78000

Physics(class) /Math (problem) 
Christine,
Oh I found my mistake thanks. :)